Fall down Detection System Design Based on Three Axis Accelerometer for Elderly
XU Ji-pin · Jisuanji fangzhen · 2014
Aiming for solving the problem of algorithm's precision and device's high-power consumption during elderly fall detection,an elderly fall-detection system was designed,in which 3-axis MEMS accelerator and low-power MCU were adopted to collect and handle the human acceleration data for lowing power consumption.We also used the threshold method to distinguish fall action and obtain the key data of fall to raise the precision of algorithm.By monitoring elderly regular movement and fall action,experimental data were collected to be dealt with,from which the threshold algorithm was acquired.It turns out that the system can effectively judge falling action in a low-power consumption condition and the detection precision reaches 93.96%.